78 lines
2.1 KiB
Matlab
78 lines
2.1 KiB
Matlab
classdef AnalogInput < handle
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properties
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mux;
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channel;
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rawValue;
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lastValue;
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lastStored=0;
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rawMax,rawMin,euMax,euMin;
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history=zeros(1, 100, 'double');
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badReads=0;
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end
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properties(Access=private)
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m,b;
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end
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methods
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function obj = AnalogInput(mux, channel, rawMin, rawMax, euMin, euMax)
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obj.mux = mux;
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obj.channel = channel;
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obj.rawMin = double(rawMin);
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obj.rawMax = double(rawMax);
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obj.euMin = double(euMin);
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obj.euMax = double(euMax);
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obj.m = (obj.euMax - obj.euMin) / (obj.rawMax - obj.rawMin);
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obj.b = obj.euMax - obj.m * (obj.rawMax);
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end
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function value = setValue(obj, inValue)
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obj.rawValue = inValue;
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value = obj.m * inValue + obj.b;
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obj.lastValue = value;
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obj.lastStored = now;
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obj.history = [value, obj.history(1:end-1)];
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end
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function value = read(obj)
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value = obj.lastValue;
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rawIn = obj.mux.readAnalogSPI();
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if (rawIn ~= -1)
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obj.badReads = 0;
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value = obj.setValue(double(rawIn));
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else
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obj.badReads = obj.badReads + 1;
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end
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if (obj.badReads > 10)
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pause(10);
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end
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end
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function value = readSim(obj, simRaw)
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value = obj.m * simRaw + obj.b;
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obj.lastValue = pv;
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obj.lastValue = value;
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obj.lastStored = now;
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obj.history = [value, obj.history(1:end-1)];
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end
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end
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methods(Static)
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function test
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pi = raspi('10.0.0.104', 'pi', 'HenryPump@1903');
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mux = MuxSetup(pi);
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anInput1 = AnalogInput(mux, 1, 0.0, 65535.0, 0.0, 100.0);
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anInput2 = AnalogInput(mux, 2, 0.0, 65535.0, 0.0, 100.0);
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anInput1.read()
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anInput2.read()
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end
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end
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end
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